package cn.tedu.haha;

import java.util.concurrent.FutureTask;

import cn.tedu.hello.B;

public class Test {
public static void main(String[] args) {
	B b=new B();
	b.eat();
	//b.eat2();
	//new B().sleep();
	//new B().play();
	A a=new A();
	a.eat();
	//b.eat2();
	//a.sleep();
	//a.play();
}

}
class A extends B{
	
}